Android——仿京东秒杀

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效果图：

京东秒杀是两个小时一个场次，判断本机的时间进行场次定时，然后在这两个小时里面进行倒计时。

MainActivity

package com.bwie.com.myapplication;import android.os.Handler;import android.os.Message;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.util.Log;import android.widget.TextView;import java.sql.Date;import java.text.ParseException;import java.text.SimpleDateFormat;import java.util.Calendar;public class MainActivity extends AppCompatActivity {    private TextView miaosha_time;    private TextView miaosha_shi;    private TextView miaosha_minter;    private TextView miaosha_second;    private Handler handler = new Handler() {        @Override        public void handleMessage(Message msg) {            super.handleMessage(msg);            setTime();            sendEmptyMessageDelayed(0, 1000);        }    };    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        initView();        handler.sendEmptyMessage(0);    }    public void initView(){        miaosha_time = (TextView) findViewById(R.id.tv_miaosha_time);        miaosha_shi = (TextView) findViewById(R.id.tv_miaosha_shi);        miaosha_minter = (TextView) findViewById(R.id.tv_miaosha_minter);        miaosha_second = (TextView) findViewById(R.id.tv_miaosha_second);    }    //秒杀倒计时    public void setTime() {        SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");        Date curDate = new Date(System.currentTimeMillis());        String format = df.format(curDate);        StringBuffer buffer = new StringBuffer();        String substring = format.substring(0, 11);        buffer.append(substring);        Log.d("ccc", substring);        Calendar calendar = Calendar.getInstance();        int hour = calendar.get(Calendar.HOUR_OF_DAY);        if (hour % 2 == 0) {            miaosha_time.setText(hour + "点场");            buffer.append((hour + 2));            buffer.append(":00:00");        } else {            miaosha_time.setText((hour - 1) + "点场");            buffer.append((hour + 1));            buffer.append(":00:00");        }        String totime = buffer.toString();        try {            java.util.Date date = df.parse(totime);            java.util.Date date1 = df.parse(format);            long defferenttime = date.getTime() - date1.getTime();            long days = defferenttime / (1000 * 60 * 60 * 24);            long hours = (defferenttime - days * (1000 * 60 * 60 * 24)) / (1000 * 60 * 60);            long minute = (defferenttime - days * (1000 * 60 * 60 * 24) - hours * (1000 * 60 * 60)) / (1000 * 60);            long seconds = defferenttime % 60000;            long second = Math.round((float) seconds / 1000);            miaosha_shi.setText("0" + hours + "");            if (minute >= 10) {                miaosha_minter.setText(minute + "");            } else {                miaosha_minter.setText("0" + minute + "");            }            if (second >= 10) {                miaosha_second.setText(second + "");            } else {                miaosha_second.setText("0" + second + "");            }        } catch (ParseException e) {            e.printStackTrace();        }    }}

布局文件：

activity_main.xml

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:app="http://schemas.android.com/apk/res-auto"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    tools:context="com.bwie.com.myapplication.MainActivity">    <LinearLayout        android:layout_width="match_parent"        android:layout_height="40dp"        android:gravity="center_vertical">        <TextView            android:id="@+id/tv_miaosha"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_marginLeft="10dp"            android:text="京东秒杀"            android:textColor="#f00" />        <TextView            android:id="@+id/tv_miaosha_time"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:padding="5dp"            android:text="10点场" />        <LinearLayout            android:layout_width="wrap_content"            android:layout_height="wrap_content">            <TextView                android:id="@+id/tv_miaosha_shi"                android:layout_width="15dp"                android:layout_height="15dp"                android:background="@drawable/shape_miaosha_time"                android:gravity="center"                android:text="1"                android:textColor="#fff"                android:textSize="10sp" />            <TextView                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:padding="3dp"                android:text=":" />            <TextView                android:id="@+id/tv_miaosha_minter"                android:layout_width="15dp"                android:layout_height="15dp"                android:background="@drawable/shape_miaosha_time"                android:gravity="center"                android:text="1"                android:textColor="#fff"                android:textSize="10sp" />            <TextView                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:padding="3dp"                android:text=":" />            <TextView                android:id="@+id/tv_miaosha_second"                android:layout_width="15dp"                android:layout_height="15dp"                android:background="@drawable/shape_miaosha_time"                android:gravity="center"                android:text="1"                android:textColor="#fff"                android:textSize="10sp" />        </LinearLayout>    </LinearLayout></RelativeLayout>

shape_miaosha_time.xml（对倒计时小黑框圆角的实现）

<?xml version="1.0" encoding="utf-8"?><shape android:shape="rectangle"    xmlns:android="http://schemas.android.com/apk/res/android">    <solid android:color="#000"></solid>   <corners android:radius="3dp"></corners></shape>

一个和京东一模一样的秒杀倒计时就实现了，是不是很简单。

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